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UPSTREAM: KVM: arm64: Return error from kvm_arch_init_vm() on allocation failure

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If we fail to allocate the 'supported_cpus' cpumask in kvm_arch_init_vm()
then be sure to return -ENOMEM instead of success (0) on the failure
path.

Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220609121223.2551-2-will@kernel.org
(cherry picked from commit ae187fec75)
Signed-off-by: Will Deacon <willdeacon@google.com>
Bug: 233587962
Bug: 233588291
Change-Id: I6e5ea42ba1c45223cd3561baf48ecc9b5c932a4f
This commit is contained in:
Will Deacon
2022-06-09 13:12:18 +01:00
committed by Will Deacon
parent 10fad255dc
commit 28ab8fd39f
1 changed files with 3 additions and 1 deletions
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4
arch/arm64/kvm/arm.c
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@@ -150,8 +150,10 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
if (ret)
goto out_free_stage2_pgd;
if (!zalloc_cpumask_var(&kvm->arch.supported_cpus, GFP_KERNEL))
if (!zalloc_cpumask_var(&kvm->arch.supported_cpus, GFP_KERNEL)) {
ret = -ENOMEM;
goto out_free_stage2_pgd;
}
cpumask_copy(kvm->arch.supported_cpus, cpu_possible_mask);
kvm_vgic_early_init(kvm);